Physics 0625 · IGCSE · Energy, work and power

Energy, work and power — practice question

A crane is used to lift loads in the vertical direction. The crane's output power for lifting a car is $P$. The crane then lifts a lorry, which has $3.0$ times the weight of the car, through $0.25$ of the distance in $0.50$ of the time. What is the output power of the crane now?

  • A$\frac{3P}{8}$
  • B$\frac{3P}{2}$
  • C$\frac{8P}{3}$
  • D$6P$

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